<div class="container_16">
    <div class="grid_5">
        <a href="home.php">
            <img id="logo" src="images/logo.png" alt="logo" />
        </a>
    </div>
    
    <div class="grid_11">
        <div class="headerRow_1">
            <a href="main.php?show=dangky" class="link lnColor2">Đăng ký</a>
            <a href="main.php?show=dangnhap" class="link lnColor2">Đăng nhập</a>
        </div>
        
        <div class="headerRow_2">
            <ul class="headerRow_2_ul">
                <li>
                    <a href="main.php?show=gioi_thieu" class="link lnColor2">giới thiệu</a>
                </li>
                <li>
                    <a href="main.php?show=lienhe" class="link lnColor2">liên hệ</a>
                </li>
            </ul>
        </div>
    </div>
</div>